urn:nasa:pds:vl_image_raw:calib:optics 1.0 1.21.0.0 Product_Ancillary 2024-05-13 1.0 Initial version. 1976-07-20Z 1982-11-05Z Viking Mission urn:nasa:pds:context:investigation:mission.viking ancillary_to_investigation Viking Lander 1 Host urn:nasa:pds:context:instrument_host:spacecraft.vl1 is_instrument_host Camera 1 for VL1 Instrument urn:nasa:pds:context:instrument:cam1.vl1 is_instrument Camera 2 for VL1 Instrument urn:nasa:pds:context:instrument:cam2.vl1 is_instrument Viking Lander 2 Host urn:nasa:pds:context:instrument_host:spacecraft.vl2 is_instrument_host Camera 1 for VL2 Instrument urn:nasa:pds:context:instrument:cam1.vl2 is_instrument Camera 2 for VL2 Instrument urn:nasa:pds:context:instrument:cam2.vl2 is_instrument optics.tab 1997-07-01 0 29 This table contains data on the transmittance and reflectance of optical components within the Viking Lander cameras. The data are taken from Huck et al., Radiometric Performance of the Viking Mars Lander Cameras, NASA TM X-72692, 1975. The values for the transmittance of the contamination cover and window are the same, but are listed as two separate columns. Differences between the four flight cameras are negligible. Thus, these data can be used for all the Viking Lander cameras. Carriage-Return Line-Feed 5 0 36 wavelength 1 1 ASCII_Real 6 micrometers The center wavelength of the interval over which the data were sampled. Data in this file were sampled every 0.025 micrometers between 0.4 and 1.1 micrometers. contamination_cover_transmittance 2 8 ASCII_Real 6 The transmittance of the contamination cover window. The contamination cover was capable of being moved out of the optical path if it became coated with dust. The cover was deployed for camera 1 on Lander 1 and camera 2 on Lander 2 during the extended mission. The cover remained in place for the entire mission on the other 2 cameras. window_transmittance 3 15 ASCII_Real 6 The transmittance of the window that protected the interior of the camera from outside elements. mirror_reflectance 4 22 ASCII_Real 6 The reflectance of the mirror in the camera. lens_transmittance 5 29 ASCII_Real 6 The transmittance of the lens over the photosensor array. optics.lbl 0 PDS3 Carriage-Return Line-Feed